1 Explain that a population pyramid shows the age and sex structure of a population. 2  Point to the horizontal bars, which show the percentage (or the absolute number) of males and females in each age group. 3  Have students interpret the chart.
1 Although they range from $150-$400 or more, a large capacity (25-70 pints) dehumidifier for a basement (the dampest portion of most homes) or other large area averages $200-$300.
Comfort-Aire BHDP701H Dehumidifier. A dehumidifier is useful in many situations and any house requires one at some point, as humidity in the air is a problem often seen in homes due to cooking steam, hot water vapors, laundry drying indoors or construction issues that increase the humidity of the walls.